Hey Hope12,
I know you are asking for Christian/Bible proof, but as I am not well versed in either I can only provide a muslim viewpoint!
Here are some verses from the Quran regarding Jesus/Easa alaihi salaam and trinity.
Chapter 004 verse 171
" O People of the Book! Commit no excesses in your religion: Nor say of Allah aught but the truth. Christ Jesus the son of Mary was (no more than) a messenger of Allah, and His Word, which He bestowed on Mary, and a spirit proceeding from Him: so believe in Allah and His messengers. Say not "Trinity" : desist: it will be better for you: for Allah is one Allah: Glory be to Him: (far exalted is He) above having a son. To Him belong all things in the heavens and on earth. And enough is Allah as a Disposer of affairs."
Chapter 005 verse 073
" They do blaspheme who say: Allah is one of three in a Trinity: for there is no god except One Allah. If they desist not from their word (of blasphemy), verily a grievous penalty will befall the blasphemers among them."
Hope this is helpful... :) :)